Controller for a lighting device



FIG. 1 is a side perspective view of the controller for a lighting device;

FIG. 2 is a front view of the controller for a lighting device;

FIG. 3 shows a rear view of the controller for a lighting device;

FIG. 4 shows a side view of the controller for a lighting device from a first side;

FIG. 5 shows a side view of the controller for a lighting device from a second side;

FIG. 6 shows a top view of the controller for a lighting device; and,

FIG. 7 shows a bottom view of the controller for a lighting device.

The portions of the controller shown in broken lines form no part of the claimed design. 

CLAIM I claim the ornamental design for a controller for a lighting device, as shown and described. 